W. R. Berkley Corporation
DE ˙ DB ˙ US0844231029
54,86 € ↑0,72 (1,33%)
2026-06-02
DELAT PRIS
SecurityDE:WR1 / W. R. Berkley Corporation
InstitutionQuantbot Technologies LP
Latest Disclosed Ownership172,464 shares
Latest Disclosed Value $ 11,430,914
Quantbot Technologies LP reports 1,447.60% increase in ownership of WR1 / W. R. Berkley Corporation

On May 13, 2026 - Quantbot Technologies LP filed a 13F-HR form disclosing ownership of 172,464 shares of W. R. Berkley Corporation (DE:WR1) valued at $9,906,332 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 11,144 shares of W. R. Berkley Corporation. This represents a change in shares of 1,447.60% during the quarter. The current value of the position is $9,461,375 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F WR BERKLEY COM 084423102 172,464 161,320 1,447.60 11,431 1,363.51 0.4677
2026-02-10 2025-12-31 13F WR BERKLEY COM 084423102 11,144 11,144 781 0.0260
2025-08-13 2025-06-30 13F WR BERKLEY COM 084423102 0 -19,399 -100.00 0 -100.00
2025-05-13 2025-03-31 13F WR BERKLEY COM 084423102 19,399 10,585 120.09 1,380 167.96 0.0440
2025-02-11 2024-12-31 13F WR BERKLEY COM 084423102 8,814 -12,078 -57.81 516 -56.54 0.0188
2024-11-13 2024-09-30 13F WR BERKLEY COM 084423102 20,892 20,892 1,185 0.0468
2024-08-09 2024-06-30 13F WR BERKLEY COM 084423102 0 -6,724 -100.00 0 -100.00
2024-05-06 2024-03-31 13F WR BERKLEY COM 084423102 6,724 6,724 595 0.0335
2023-11-07 2023-09-30 13F WR BERKLEY COM 084423102 0 -74,582 -100.00 0 -100.00
2023-08-08 2023-06-30 13F WR BERKLEY COM 084423102 74,582 15,404 26.03 4,442 20.58 0.2909
2023-05-12 2023-03-31 13F WR BERKLEY COM 084423102 59,178 46,776 377.16 3,684 309.33 0.2607
2023-02-13 2022-12-31 13F WR BERKLEY COM 084423102 12,402 -9,355 -43.00 900 -35.94 0.0646
2022-11-07 2022-09-30 13F WR BERKLEY COM 084423102 21,757 -30,815 -58.61 1,405 -60.84 0.1061
2022-08-09 2022-06-30 13F WR BERKLEY COM 084423102 52,572 52,572 3,588 0.3298
2022-05-16 2022-03-31 13F WR BERKLEY COM 084423102 0 -7,030 -100.00 0 -100.00
2022-02-11 2021-12-31 13F WR BERKLEY COM 084423102 7,030 -6,634 -48.55 579 -42.04 0.0470
2021-11-09 2021-09-30 13F WR BERKLEY COM 084423102 13,664 9,845 257.79 999 251.76 0.0731
2021-08-12 2021-06-30 13F WR BERKLEY COM 084423102 3,819 3,819 284 0.0223
2020-05-13 2020-03-31 13F WR BERKLEY COM 084423102 0 -7,826 -100.00 0 -100.00
2020-02-10 2019-12-31 13F WR BERKLEY COM 084423102 7,826 57 0.73 540 -3.74 0.0536
2019-11-12 2019-09-30 13F WR BERKLEY COM 084423102 7,769 7,769 -0.73 561 3.89 0.0553
2016-10-31 2016-09-30 13F WR BERKLEY COM 084423102 0 -5,049 -100.00 0 -100.00
2016-08-02 2016-06-30 13F WR BERKLEY COM 084423102 5,049 5,049 0.00 302 0.0321
2016-04-28 2016-03-31 13F WR BERKLEY COM 084423102 0 0 0 0.0000
2016-01-22 2015-12-31 13F WR BERKLEY COM 084423102 0 -7,762 -100.00 0 -100.00
2015-10-22 2015-09-30 13F WR BERKLEY COM 084423102 7,762 6,562 546.83 422 711.54 0.0736
2014-01-31 2013-12-31 13F WR BERKLEY COM 084423102 1,200 1,200 52 0.0254
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.